* {
  /* 初始化 */
  margin: 0;
  padding: 0;
}
body {
  /* 100%窗口高度 */
  height: 100vh;
  /* 弹性布局 水平+垂直居中 */
  display: flex;
  justify-content: center;
  align-items: center;
  /* 渐变背景 */
  background: linear-gradient(200deg, #517fa4, #243949);
}
.card {
  /* 相对定位 */
  position: relative;
  width: 300px;
  height: 450px;
  margin: 20px;
  background-color: #758a99;
  border-radius: 20px;
  /* 溢出隐藏 */
  overflow: hidden;
  /* 弹性布局 */
  display: flex;
  /* 元素纵向排列 */
  flex-direction: column;
  /* 居中 */
  align-items: center;
  color: #fff;
  /* 阴影 */
  box-shadow: 0 0 30px rgba(0, 0, 0, 0.5);
  /* 不让其被挤压 */
  flex-shrink: 0;
}
.card .photo img {
  width: 100%;
  height: 100%;
  /* 保持原有尺寸比例，裁切长边 */
  object-fit: cover;
}
/* 默认大图 */
.card .photo {
  /* 绝对定位 */
  position: absolute;
  top: 0;
  width: 100%;
  height: 100%;
  border-radius: 0%;
  overflow: hidden;
  /* 动画过渡 */
  transition: 0.5s;
}
/* 鼠标移入变小图 */
.card:hover .photo {
  top: 30px;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.8);
}
/* 加个黑色到透明的渐变背景 */
.card .photo::before {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, transparent 50%, #222);
}
.card h1 {
  position: absolute;
  top: 370px;
  transition: 0.5s;
}
.card:hover h1 {
  top: 170px;
}
.card h2 {
  margin-top: 220px;
  width: 80%;
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
  font-size: 20px;
  text-align: center;
  margin-bottom: 20px;
  padding-bottom: 20px;
}
.card p {
  width: 90%;
  /* text-indent: 32px; */
  font-size: 16px;
  margin-bottom: 15px;
  line-height: 30px;
}
.card a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  border: 1px solid rgba(255, 255, 255, 0.5);
  padding: 8px 32px;
  border-radius: 8px;
}
.card a:hover {
  color: #fff;
  background-color: rgba(255, 255, 255, 0.2);
}